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CH1012
LE CHATELIER
Le Chatelier's principle
When a chemical system at equilibrium is disturbed then it regains equilibrium
by undergoing a net reaction that
reduces the effect of the
disturbance to try to restore K.
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®
aA + bB      cC + dD
• addition of reactant A to the LHS promotes
the forward reaction LHS  ® RHS
• addition of product C to the RHS promotes
the reverse reaction LHS  ¬  RHS